Lu, Mingzhen;
Bond, William J.;
Sheffer, Efrat;
Cramer, Michael D.;
West, Adam G.;
Allsopp, Nicky;
February, Edmund C.;
Chimphango, Samson;
Ma, Zeqing;
Slingsby, Jasper A.;
Hedin, Lars O.
Biome boundary maintained by intense belowground resource competition in world’s thinnest-rooted plant community
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Media type:
E-Article
Title:
Biome boundary maintained by intense belowground resource competition in world’s thinnest-rooted plant community
Contributor:
Lu, Mingzhen;
Bond, William J.;
Sheffer, Efrat;
Cramer, Michael D.;
West, Adam G.;
Allsopp, Nicky;
February, Edmund C.;
Chimphango, Samson;
Ma, Zeqing;
Slingsby, Jasper A.;
Hedin, Lars O.
imprint:
Proceedings of the National Academy of Sciences, 2022
Published in:Proceedings of the National Academy of Sciences
Description:
<jats:title>Significance</jats:title>
<jats:p>The distribution and stability of biomes are critical for understanding, modeling, and managing the land biosphere. While studies have emphasized abiotic factors such as climate, geology, or fire regimes, we here identify a biological mechanism—plant–plant competition for belowground resources—as critical for maintaining the boundary between the Fynbos and Afrotemperate Forest biomes in South Africa. We demonstrate an apparent general mechanism in which local competition triggers a biome-scale feedback between plant traits and soil resources, which, in turn, stabilizes the biome boundary by allowing plants to maintain their own preferred soil conditions. Our findings are of general importance for understanding the organization of biodiversity across landscapes, for managing alien plant invasions, and for modeling the future of biome boundaries.</jats:p>